tv Doc Film Deutsche Welle March 20, 2020 2:15am-3:00am CET
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water is the foundation the source and the mechanisms of the government wife but also govern the whole bio system and the climate of the blue planet. around want to raise their trash share. it's a miracle. somehow it's a miracle. i spend more than a $1000000.00 every year on electricity to pump water. for back up we have a larger impact on the planet than ever before the climate the water the land biodiversity the ocean city hall. and the cycle of water and being able to understand that this one of the most critical questions that we have to deal with today in a changing climate. is dangerous hard to logical climate extremes
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that are going to be threatening a whole lot of different ecological and human values. and when shall we call ourselves 1st place for all you know why water because before you realize it's going to water salts it's going to die. so we really have it in our hands down. to understand so that we can sustain the health of the human population. and. water is the foundation of all life as we know it but it's the most wasted natural resource reflecting man's intents in short time on our.
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water is like you. know. we measure it in drinking water but it's much more than that. water must be present in all of the planet systems for it to be a balance. the mystery to us all you can think of water as her blood supply for you flows through the landscape town supplies nutrients to nature and plants. because. water is also the source of human life and society. and you don't know. if we manage the water as we do now where we. polluted and then try to dispose of it with very serious consequences that system is not sustainable
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. and that current system. we have running out of water. we are losing more and more useful water the association between the imbalance of the water cycle and climate related problems is bigger than what most people are aware of. we are also not taking care of our most important substance. we just regard it as any liquid. still water is the very foundation of life itself. was to a large degree formed as the earth to shape. it's a chemical compound of 2 hydrogen atoms and one oxygen as him it's a simple compound but with very distinct qualities.
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water is one of the the universe's most unique materials it has completely unexpected unique properties we have it as a vapor we have it as liquid water running down the rivers and lakes and in the oceans we have it as snow on ice in its coldest days. 97 percent of the planet's water sailing and found in the oceans. the remaining 3 percent is fresh water of which more than half its contained in glaciers. only about one percent is available to us nevertheless we act as if water is an endless resource. with water something that we all take for granted until it's not there we just take
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it for granted no wonder you go we're going to turn the tap in and a hotel room or another city that there's going to be water there. i saw study that the majority of the people in the state don't know where their water comes from i just know the water bill. comes. we don't understand the value of water north of the hydro sphere is crucial for the ecosystems that we depend upon and in the magic and that everything is created in the meeting between sun and water. the. solar energy cleanse the sea water and produces fresh water. that's nature is constantly cleansing water in the water cycle. the rain water is clean but unfortunately chemicals can
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be dissolved into it in the atmosphere. out of. the amount of fresh water on the planet depends effectively on evaporation and transpiration because she has water that. leaves behind all the salts in the pollutants that may be in the oceans away from. and it just goes up as water by pure water but and so it regenerates fresh water. temp. at a certain level in temperature water vapor condenses mostly into ice particles or snowflakes to form clouds. or in the clouds get heavy enough to put it simply you
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get precipitation. precipitation. rain and snow that falls in large volumes to hardly at all. for water molecules to form drops it's been discovered that aerosols are needed. small ice and salt crystals which are the starting point for condensation. 1000000 of these cloud micro droplets need to be coalesced into a train drop for it to be heavy enough and large enough to fall out of the under gravity back to the left. and so this new creation of these water droplets that king balancing process in nature. in driving rain.
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but there are other air assaults that are important for creating raindrops. bacteria. through the about permission of trees specific bacteria end up in the atmosphere where they bind water vapor and create drops. the bacteria return to earth with the rain that they themselves created. we have precipitation that comes down on to the surf. as of earth that either goes into the oceans or it goes on to the land if it goes on to the land then some of it percolates down into the ground some of it evaporates back into the atmosphere some of it goes into the plants some of it runs down the hill right away. if it falls a snow then the beauty of that is that it stays as
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a mountain reservoir of water and it doesn't move out of its system very quickly. so there's just this constant exchange of water moving across the surface under the surface into the atmosphere and then back down on the surface. when the rain falls down there becomes ground water and it goes deeper than i am it takes up minerals. here in bravo we have ground water at about 80 major deep and about 200 meters deep it's coming from belgium and it travels with about 20 meters per year very slowly and it took about
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10000 year. for drinking water and. it's also known as fossil water depending on the bedrock age may vary but most ground water reservoirs are ancient and were created long before humanity appeared on earth. it's formed by rainfall that dissolves minerals and nutrients. it's the best and purest of all water and the most important water resource for us and the ecosystems . if you pump water and in every year your new using that ground water without it being replenished then the groundwater is going to decrease how far can they
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tell. you how much water we pump here. 2000000000 with a b. gallons a year. i spend more than a $1000000.00 every year on electricity to pump water. it's the land of the big acreages. from farmland gross animal feed such as corn and green on 14000 hectares. these cultivations are possible thanks to one of the world's largest systems of fossil groundwater being available. ogallala aquifer supplies 8 states and about 2 and a half 1000000 inhabitants with water but the levels are dropping. unfortunately we've pumped in this area at least 30 percent of the awkward for say
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dryer wave we've lowered it and as we do that the well is more pressed to give up the water and there's a lot of wells that only need a 70 year. and that will be gone groundwater is being overused all over the world into. large scale operation and monoculture cost water. it's not only the farms in kansas that consume. about 70 percent of the planet's freshwater goes to cultivation and food production. to the large scale model cultures drain the groundwater systems to dangerously low levels. of the ogallala aquifer ever be drained it is being drained right now and for people use the word mind because it's something that's taken out of the so ground and not put back as if we were mining gold or pumping oil so mining operation.
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thousands of years were required to create these ground water supply and so pumping those out of there. in order to get back to the same awkward for level that we had before we started pumping them. and it's going to take a long time. and so this creates enormous problems in the next couple decades to see agriculture that. is designed to collapse. we extract more than what is replenished. we're draining the world's most important water resources. but there is another very important water existing in environments
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that we hardly think of. the soil water. the hidden resource found in the soil which is essential for life in the biosphere. the u.s. soil which cover you know that 29 percent of all 13000000000 take days of land surface. and depending on the quality of that sponge they can hold up to 50 percent of the volume in water. a significant amount of water is actually stored. and as a groundwater and as a matter for get is more than the water did we just see them for free verse like. in order for soil and cultivated land to function and supply water it must be healthy and alive. microorganisms in organic matter preserve water for you
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know time when rainfall is unpredictable this is extremely important for. the critical thing is what happens to every rain drop that falls on those of us does that intro try and get retained in a form and location where it's a valuable for plant growth or does. run off the road soils and systems and then get lost into the ocean and the difference whether it infiltrates or grunge off depends on the earth's soil cabin sponge whether that sponge can have the poor city in the permian billet the to absorb that water and then feed it into the deepest sort of risings. in so reservoir because it's that water that governs life in the botched system. the industry of formal
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farming just before the ability of soil to fold water. it just loses me almost and the whole very complex soil on top of that which is there i let's say you have a heavy rain or any formal for speed station just place on the surface because the soil will become cater for the salt the soil spine which is leaving us groundwater h.r. is leaving us because of that so we're just flushing the vital component of life away from ourselves. it comes down to impoverished soil that has lost its capacity to infiltrate and its ability to hold water. at the same time we drain and divert the water from its natural cycle.
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we are been eyes the planet through industrial development and the soil horizon that was an important water reservoir is being sealed under concrete and infrastructure. if they haven't i think said so forward your cities are growing and we're asked faulting the planet yet are you going to the tarmac the farmland we isolate farmland from the water cycle. from the greenish diverts surface water into reverse and leaks. and it's often quite polluted. water from heavy rainfall has nowhere to go towards life form after her you find it runs straight into the sea. it
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isn't put to use. the enemy and it doesn't replenish the groundwater. it's not a resource or follow on and team goal. incidentally want to decrease the word long we decrease the value of diversity we decrease the water in situation so we decrease the want to cycle. we consume groundwater and create hydrophobic soils. we isolate the soil under harden plants and the precipitation is diverted. this means less water on the continents and the climate groundwater systems. and the consequences of this are extensive. d.-r. duration is a long term process often less and less washoe reaching the ground water that makes threats for instance trees and all our plants can't reach the ground water anymore
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. and the impact through to socially quite horrific because adventure we call ourself 1st base for all the warm water and all we need if crocs before you realize is that the water is so hot that it is going to die. with very little bit of it we flushed away the less water is coming in and the sea is holding to certification comes in slowly but. the different regions are experiencing already significant a river cation losing 20 to 30 percent of their rainfall and risk turning more and more into days. when nature withers from thirst it gets warmer.
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more solar energy that neither water nor better take should can help the cooling of the soil. our consumption and use of water resources have a direct impact on global temperature and our climate. it is water that in the sense governs 95 percent of the heat dynamics of the blue planet and for the last 4000000000 years that is water that is actually regulated the climate. it's the different water processes that govern these dynamic. but we have said before forcefully our research shows that it's not just a matter of climate change things we do at ground level have an impact intensified farming to increase the yield to square meter or if the a creating creases or we use more water we increase transpiration yet me and my
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daughter come out been transferred. up to now we've been so focused exclusively almost on the c o 2 concentrations in the atmosphere that has obviously gone up abnormally now we have assumed that the c o 2 rise because it is a greenhouse gas it's caused the planet to heat up and certainly that is a key contributing factor but a far far bigger factor has been the changes we've been making. hydrology. not only do we release previously reserved water that increases the amount of water vapor in the atmosphere but we also contribute to global warming by large scale model cultivation and increasing our been a station. we create islands of heat that reports clouds and rainfall.
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if we have a brain vegetated landscape with transpiration cooling the soils under that landscape rarely get above 20 degrees centigrade even in tropical regions. converse lee where we have been exposed soil subject to the incident solar radiation specially sold it hasn't got water that soil or as foetal concrete well that surface can often heat up to 60 degree centigrade old. which means a profoundly more infrared heat is really very aged from hot surfaces compared to cold so. the more cultures and industry all.
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farming to bring along these phenomena of heat islands because from one day to another a large area is harvested and from one day to another you just switched on and you snip off a finger and you klar power plant that is there anything upwards of d.c. is all the i recall term and you can just sort of form a culture which forms the weather. and. warm atmosphere can contain more water than a cold one and we can safely assume the hurricanes and in suing severe rainfall will become more frequent. in order and they will intensify all me for. the cold not the intensity of the cold not.
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we water the atmosphere with fresh water. and with rising temperatures the hydrological cycle is affected. it's difficult to observe but imbalance contributes to weather processes that affect every part of the planet. it is dangerous hydrological climate extremes they're going to be impacting intensifying and really threatening whole lot of different ecological and human values these are hiring kens these as stones floods very difficult droughts wildfires and it's these hydrological extremes that kill human veins. so that for backup what climatic effect on the water leads to disastrous floods and
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droughts both over the long term effects can change the conditions for a large number of societies on earth that we have not. yet as the one you could these extremes be the norm in 50 years how are we going to handle them going to the. extreme will become the norm don't we already see it today. that environments change for the worse for all living beings . what will our existence look like in the future. it seems uncertain with a changing world view. we can do ok when. we get droughts we get wet periods and it's and it's minor but if it comes 456 years of intense drought or as in the colorado river basin now
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we're in 18 years of drought we have 40000000 people in the state of california that are very strongly dependent on that water resource. where are they going to go if it goes to dry people don't survive those things. civilizations don't survive the. lack of fresh water is a reality in many parts of the world but that's far away not here. water is also consumed through direct consumption and as a commodity in our trading systems. it's a virtual invisible water that hides primarily in products linked to cultivation in
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agriculture. some to suit it all so you had a lot of goods are imported from regions where there is a shortage of water. you know about a lot of water flows from arid areas to areas where water resources are already plentiful and so if it. so have the fast months in the you tend to think of those as a local resource call so the trading of goods means we have an impact on each other those most in everything. from bottom feed. everything contains water from textiles to cut flowers. our lifestyles are costly and we exhaust water stressed nations access and right to safe clean water. it's
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not only about products half of the food we consume is imported. the 40 percent 30 to 40 percent of all food stuffs are never consumed the nuclear ruined by poor storage or poor handling or just thrown away. the equivalent to the u.s. production of foodstuffs is just thrown away. and that means we're also wasting water that the you've got them among us that. we consume large volumes of water through overproduction and discarded food. things that don't just waste resources but also generate pollution. you.
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know what surely affects our behavior because sooner or later at everything we do or use or. half as up in the launch of. the chemical footprint that we're finding in reverse in the lake is definitely a reflection of polls showing society interacts with little interest when we're taking samples near a city it's more dominated by ditto jim's cultural roots middle names like us who saw its if you take it near a mining area from the thing that's nice and there are so you contribute he see the human activities on driving the chemical footprint in the river. of the agricultural use of water here in our state of kansas the majority would be for watering crops and one of the concerns as water filters through the soil and makes it all the way down to where they are for is water quality and the one big
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concern we have is that leeching of nitrogen fertilizer. in this country where a lot of livestock so we have a good mood a problem we have far too much money are and we see that in our groundwater and also in the water in the kitchens and into candles. so i think an arbitration in the brown water is also a problem for biodiversity sort. of nitrogen leeches down into the awful for which contaminates are for drinking at it it isn't just irrigation water they can do that one of the big sources is the runoff from feedlots kansas is the largest meat packing state and. it's not just the fertilizers from the meat industry. affect water resources negatively and pollute ground water. the water that naturally gives us minerals and nutrition also gives us completely different substances.
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rocksmith in them this bit on us and so many of those it is an excellent solvent it absolves pollution so that it becomes part of the cycle. they are lotty of there are all sorts of pollutants in different parts of the water system. so cleaning it up is energy and cost intensive. the question is how much of it can we claim is ours come. you're seeing are used for the pollutions are a big problem. there are many unrecorded issues we don't carry out tests everywhere the city of it all. we dilute the chemicals in the belief that the consequences will be smaller. but
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despite our efforts to minimize risks that affects our usage of chemicals or extensive and already noticeable. the drugs that are in the service what are painkillers but pressure medicines diabetes i'm tired left tickles all sorts of medicines we use daily antibiotics. and while they have also different effects on the ecosystems in the water. our naive relationship to chemicals and chemically manufactured products is unsustainable this makes large volumes of the available water on earth useless. and in addition we have plastic. these things cost a bit it's often at the fence there are plastics in tap water and there are plastics even more often in bottled water give us we're drinking plastics provided
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each day per square metre indoors more than 300 plastic micro particles collect to leave a glass of water on the table and you'll be exposed to them with yes they're in the air water and food and it's experience and the impact on humans has yet to be studied we're starting to understand the impact on animals and organisms but we don't yet know the full effects. yet men to be hoarding in but awesome lumps of water pour ific them. plastic is everywhere and in places where people often meet artificial turf small plastic fragments and granules make their way down the sewage systems. there's also the possibility that micro particles attract and collect chemicals.
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what happened. the water cycle is everywhere. cleaning filtering drinking water rainfall climate balance. but it has been downgraded to a consumable and a transport system for pollution. the planet's bloodstream a strain. and surely this reflects on us as humans and our short intense time on earth. over the last 200 years that's the period that humans have really come to have an enormous influence on the earth system and industrialization itself is not all bad it's just how we capture what we're doing and understand how are influencing ourselves influencing our ecosystem influencing our water supply.
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biodiversity is like a pyramid at the top of the pyramid this is a place for human beings and if by they do is to disappear human beings disappear too so it's very important to protect the bio diversity. and also there is a big connection was water clearly or decided to play a role or for the good water kept true but also for the good water if you trisha why didn't moss. and this area is so so important to to redo the warming so well and pretty area and this guy said but get your get your 10 guys more suited to the oh yes they're known as a sword it's very important to preserve this place to get you into a review of the bar room. we have to take cabin out of the air that was basically put there for mad the good asian about lensing and put that back
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into our soils to rebuild the sponge so we can redo it. hydrology. 2 to 3 percent carbon added into the soil. can create the structural regeneration of fakes. add voids surfaces into that sort of matrix and really read through the symbols. through photosynthesis carbon can be bound in the soil but in nature transform carbon dioxide into a rich soil with microorganisms that make the soil healthy and water retaining. this way the climate the water balance and or arable land will be positively affected. in the spring one defocus in that is there in the zone you will see
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a significant drop in terms of the amount of carbon dioxide and yet here which goes down as difficult as so all progresses through the summer and then when we had before and everything is harvested again you will see a significant increase in terms of the concentration of carbon dioxide from the shoulder magni off impact if austin does his tests on the amount of carbon dioxide in the office here. souls are also fundamental because it's the only point of agency the only point of influence we humans have on the it is climate hydrology and our future you see we can't change the oceans we can't reach change the ice caps we can't really change the atmosphere we can to some extent but the real point of agency is the sponge. there is clearly an over consumption of the water resources on the planet. but consumption
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that affects the climate the ecosystems and everyone on earth. we have to end the idea that freshwater is infinite and we have to understand the value of the hydrological cycle as well as the solutions that nature has already developed for the climate. we are not using the systems that nature provides is a lesson that nature provides us and we state we are above the night and we have lived the last century with delusions that we can fix things technologically but i think the reality is coming that they are limits there is an imperative for regeneration and hopefully we will have the wisdom to now say hey this is work with
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nature and it is get out of the throat and live a braise and live her hope to actually regenerate baseball system. we should be more aware of the fact that our ground water is trash and use it with . respect as you treat a treasure to miracle. somehow it's a miracle that we aren't so usual when we can't see the mirror calling it. something more still and what society has to do now is monitor how we use our water resources. sources so that we avoid overuse and too much pollution of which would ruin the basis of our existence and food again existence. so we really have it in our hands now. to understand how these water supplies are
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changing these water forces as well as the interaction with the climate are changing so that we can sustain. the standard of living and. and. and the health. of. the human population. we are one. of us the water and nature. we need to rethink to stop polluting and draining and instead retain the water on the continents. because the carbon storage and think of cultivation methods that replenish the water in the soil in the ecosystems and in the ground water. we must think of photosynthesis and nature's own climate control.
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but we must also understand that balance in the water cycle is a fundamental condition for our future. clearly we have messed up the show we have the graded these lands are spongers up in so reservoirs a hydrology the cooling of the planet. nature will always be here out there and nature can and will restore those biases. the only question is will we hope or do that or let it do it by ourselves after we are gone.
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for. europe schools are closing and the italy lessons have been taking place at home for several weeks now the fire the internet. drastic measures exceptionally talented in time for teachers and. how much for the students learn during this time look around and. focus on your. being 30 minutes on d w. the time of. the rhythm of the markets. the momentum of the working world.
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